Although CAM-based methods are simple and effective, they probably focus on the broad regions of objects without the marginal parts. Thus, an erasing-based strategy is designed to preserve more relevant parts of objects. According to the erasing regions, they are categorized into two types: random erasing [1]}, [2]} and network-guided erasing methods [3]}. Apart from the above erasing methods, SPG [4]} and I\(^2\) C [5]} apply the constraint of pixel-level correlations to improve the quality of localization maps.
